Urban context extension design - massing and plot boundaries

Proposals in an urban context should not overdevelop the site in terms of massing, plot size and proximity to boundaries thereby, for example, creating a visual 'terrace' effect. This is one of a number of problems associated with side extensions, where they can alter the character of the area by filling the visual gaps between residential properties. The need for adequate space alongside boundaries is also important to provide ease of access to the rear of the property and to allow for maintenance. This will also serve to eliminate the possibility of any part of the extension, including rainwater goods, overhanging neighbouring property.